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OPA1678 PDF даташит

Спецификация OPA1678 изготовлена ​​​​«Texas» и имеет функцию, называемую «Low-Distortion Audio Operational Amplifiers».

Детали детали

Номер произв OPA1678
Описание Low-Distortion Audio Operational Amplifiers
Производители Texas
логотип Texas логотип 

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OPA1678 Даташит, Описание, Даташиты
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OPA1678, OPA1679
SBOS855 – FEBRUARY 2017
OPA167x Low-Distortion Audio Operational Amplifiers
1 Features
1 Low Noise: 4.5 nV/Hz at 1 kHz
• Low Distortion: 0.0001% at 1 kHz
• High Open-Loop Gain: 114dB
• High Common-Mode Rejection: 110 dB
• Low Quiescent Current:
2 mA Per Channel
• Low Input Bias Current: 10 pA (Typical)
• Slew Rate: 9 V/μs
• Wide Gain Bandwidth: 16 MHz (G = 1)
• Unity-Gain Stable
• Rail-to-Rail Output
• Wide Supply Range:
±2.25 V to ±18 V, or 4.5 V to 36 V
• Dual-Channel and Quad-Channel Versions
• Small Package Sizes:
Dual-Channel: SO-8 and MSOP-8
Quad-Channel: SO-14 and TSSOP-14
2 Applications
• Analog Signal Conditioning
• Analog and Digital Mixers
• Audio Effects Pedals
• A/V Receivers
• Car Audio Systems
3 Description
The OPA1678 (dual-channel) and OPA1679 (quad-
channel) operational amplifiers offer higher system-
level performance over legacy op amps commonly
used in audio circuitry. The OPA167x amplifiers
achieve a low 4.5-nV/Hz noise density and low
distortion of 0.0001% at 1 kHz which improves audio
signal fidelity. They also offer rail-to-rail output swing
to within 800 mV with a 2-kΩ load, which increases
headroom and maximizes dynamic range.
The OPA1678 and OPA1679 operate over a very
wide supply range of ±2.25 V to ±18 V or (4.5 V to 36
V) on only 2 mA of supply current to accommodate
the power supply constraints of many types of audio
products. These op amps are unity-gain stable and
provide excellent dynamic behavior over a wide range
of load conditions allowing them to be used in many
audio circuits.
The OPA167x amplifiers use completely independent
internal circuitry for lowest crosstalk and freedom
from interactions between channels, even when
overdriven or overloaded.
The OPA167x temperature ranges are specified from
–40°C to +85°C.
SoundPlus™
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
OPA1678
SOIC (8)
VSSOP (8)
4.90 mm × 3.91 mm
3.00 mm × 3.00 mm
OPA1679
SOIC (14)
TSSOP (14)
8.65 mm × 3.91 mm
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Internal Schematic
THD+N vs Frequency (2-kΩ Load)
V+
Tail
Current
VBIAS1
0.1 Gain = 10 V/V
Gain = 1 V/V
Gain = -1 V/V
VIN+ 0.01
Class AB
Control
VO
Circuitry
VIN- 0.001
VBIAS2
-60
-80
-100
0.0001
-120
V-
Copyright © 2017, Texas Instruments Incorporated
0.00001
-140
10 100 1k 10k
Frequency (Hz)
C002
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.









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OPA1678 Даташит, Описание, Даташиты
OPA1678, OPA1679
SBOS855 – FEBRUARY 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ...................................... 5
6.2 ESD Ratings.............................................................. 5
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information: OPA1678 ................................ 6
6.5 Thermal Information: OPA1679 ................................ 6
6.6 Electrical Characteristics: VS = ±15 V....................... 7
6.7 Typical Characteristics .............................................. 9
7 Detailed Description ............................................ 14
7.1 Overview ................................................................. 14
7.2 Functional Block Diagram ....................................... 14
7.3 Feature Description................................................. 14
7.4 Device Functional Modes........................................ 18
8 Application and Implementation ........................ 19
8.1 Application Information............................................ 19
8.2 Typical Application .................................................. 20
8.1 Other Applications................................................... 24
9 Power Supply Recommendations...................... 27
10 Layout................................................................... 27
10.1 Layout Guidelines ................................................. 27
10.2 Layout Example .................................................... 28
10.3 Power Dissipation ................................................. 28
11 Device and Documentation Support ................. 29
11.1 Device Support...................................................... 29
11.2 Documentation Support ........................................ 30
11.3 Related Links ........................................................ 30
11.4 Receiving Notification of Documentation Updates 30
11.5 Community Resource............................................ 30
11.6 Trademarks ........................................................... 30
11.7 Electrostatic Discharge Caution ............................ 30
11.8 Glossary ................................................................ 31
12 Mechanical, Packaging, and Orderable
Information ........................................................... 31
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
DATE
February 2017
REVISION
SBOS855
NOTES
Initial release.
2 Submit Documentation Feedback
Product Folder Links: OPA1678 OPA1679
Copyright © 2017, Texas Instruments Incorporated









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OPA1678 Даташит, Описание, Даташиты
www.ti.com
5 Pin Configuration and Functions
OPA1678 D and DGK Packages
8-Pin SOIC and VSSOP
Top View
NAME
–IN A
+IN A
–IN B
+IN B
OUT A
OUT B
V–
V+
PIN
NO.
2
3
6
5
1
7
4
8
OUT A
±IN A
+IN A
V±
1
2
3
4
8 V+
7 OUT B
6 ±IN B
5 +IN B
Not to scale
Pin Functions: OPA1678
I/O DESCRIPTION
I Inverting input, channel A
I Noninverting input, channel A
I Inverting input, channel B
I Noninverting input, channel B
O Output, channel A
O Output, channel B
— Negative (lowest) power supply
— Positive (highest) power supply
OPA1678, OPA1679
SBOS855 – FEBRUARY 2017
Copyright © 2017, Texas Instruments Incorporated
Product Folder Links: OPA1678 OPA1679
Submit Documentation Feedback
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Номер в каталогеОписаниеПроизводители
OPA1678Low-Distortion Audio Operational AmplifiersTexas
Texas
OPA1679Low-Distortion Audio Operational AmplifiersTexas
Texas

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